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Haskell: illegal Happy file if category names use apostrophe #279

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andreasabel opened this issue Dec 16, 2019 · 0 comments
Closed

Haskell: illegal Happy file if category names use apostrophe #279

andreasabel opened this issue Dec 16, 2019 · 0 comments
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@andreasabel
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bug LBNF Concerning the LBNF syntax and its checking parser Issues concerning parser generating
Milestone
2.8.4

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@andreasabel
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Prg_ . Prg' ::= "prg" ;

Happy does not like the grammar BNFC creates for it:

Prg' :: { Prg' }
Prg' : 'prg' { Test.Abs.Prg_ }
Test/Par.y: Parse error

According to the Happy specification, identifiers for non-terminals may not use the apostrophe character:
https://www.haskell.org/happy/doc/html/sec-grammar-files.html#sec-lexical-rules
@andreasabel andreasabel added bug Haskell parser Issues concerning parser generating labels Dec 16, 2019
@andreasabel andreasabel self-assigned this Dec 29, 2019
@andreasabel andreasabel added this to the 2.8.4 milestone Dec 29, 2019
@andreasabel andreasabel added LBNF Concerning the LBNF syntax and its checking and removed Haskell labels Dec 29, 2019
@andreasabel andreasabel mentioned this issue Jan 4, 2020
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bug LBNF Concerning the LBNF syntax and its checking parser Issues concerning parser generating
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